Re: [Sblim-devel] Handling of XML CDATA in string property

Chris,

after doing further analysis, it looks like there's still a bug in sfcb.

* Chris Buccella <buc...@li...> [Feb 27. 2012 21:32]:
> Hey Klaus,
> 
> As a clarification, the provider is only returning "a cdata string" in 
> this case. It is SFCB that encapsulates the provider output into XML 
> tags.

Looking at the code, SFCB wraps 'instance'-type values in CDATA only.
The case at hand is about 'string'-type values only.

> 
> Given that, I see the situations your raised as applying solely to 
> wbemcli's behavior. It's client-specific, so I think it's really a 
> matter of the "right way" to display EmbeddedObjects when they are returned.

I beg to differ.

Given that CIM/XML should be an interoperable protocol, wbemcli should
behave identical together with SFCB, Pegasus or any other CIMOM.

However, SFCB and Pegasus currently disagree in the on-wire
representation of specific string property values.

I have written a sample cmpi provider returning three string property
values:

  Strange=".this.is&strange"
  CData="<![CDATA[this is cdata]]>"
  XmlData="<wrap><![CDATA[this is cdata]]></wrap>"

Running wbemcli with -dx reveals the following

SFCB's XML representation:

  <PROPERTY NAME="Strange" TYPE="string">
    <VALUE>.this.is&amp;strange</VALUE>
  </PROPERTY>
  <PROPERTY NAME="CData" TYPE="string">
    <VALUE><![CDATA[this is cdata]]></VALUE>
  </PROPERTY>
  <PROPERTY NAME="XmlData" TYPE="string">
    <VALUE>&lt;wrap&gt;<![CDATA[this is cdata]]>&lt;/wrap&gt;</VALUE>
  </PROPERTY>

wbemcli-1.6.2 crashes on this XML data, my patched wbemcli works fine.


Pegasus XML representation

  <PROPERTY NAME="Strange"  CLASSORIGIN="RCP_PassCData" TYPE="string">
    <VALUE>.this.is&amp;strange</VALUE>
  </PROPERTY>
  <PROPERTY NAME="CData"  CLASSORIGIN="RCP_PassCData" TYPE="string">
    <VALUE>&lt;![CDATA[this is cdata]]&gt;</VALUE>
  </PROPERTY>
  <PROPERTY NAME="XmlData"  CLASSORIGIN="RCP_PassCData" TYPE="string">
    <VALUE>&lt;wrap&gt;&lt;![CDATA[this is cdata]]&gt;&lt;/wrap&gt;</VALUE>
  </PROPERTY>

wbemcli-1.6.2 works fine on this XML data and returns the string
property value unchanged.


Regards,

Klaus
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